//package com.miya.demo.config;
//
//import org.springframework.boot.autoconfigure.AutoConfigureAfter;
//import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
//import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
//import org.springframework.boot.web.servlet.FilterRegistrationBean;
//import org.springframework.context.annotation.Bean;
//import org.springframework.context.annotation.Configuration;
//
//import javax.servlet.*;
//import java.io.IOException;
//
//@Configuration
//@ConditionalOnWebApplication
//@AutoConfigureAfter(DruidDataSourceAutoConfigure.class)
//@ConditionalOnProperty(name = "spring.datasource.db1.druid.stat-view-servlet.enabled",
//        havingValue = "true", matchIfMissing = true)
//public class RemoveDruidAdConfig {
//
//    /**
//     * 除去页面底部的广告
//     */
//    @Bean
//    public FilterRegistrationBean removeDruidAdFilterRegistrationBean(DruidStatProperties properties) {
//        // 获取web监控页面的参数
//        DruidStatProperties.StatViewServlet config = properties.getStatViewServlet();
//        // 提取common.js的配置路径
//        String pattern = config.getUrlPattern() != null ? config.getUrlPattern() : "/druid/*";
//        String commonJsPattern = pattern.replaceAll("\\*", "js/common.js");
//
//        final String filePath = "support/http/resources/js/common.js";
//
//        //创建filter进行过滤
//        Filter filter = new Filter() {
//            @Override
//            public void init(FilterConfig filterConfig) throws ServletException {
//            }
//
//            @Override
//            public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
//                    throws IOException, ServletException {
//                chain.doFilter(request, response);
//                // 重置缓冲区，响应头不会被重置
//                response.resetBuffer();
//                // 获取common.js
//                String text = Utils.readFromResource(filePath);
//                // 正则替换banner, 除去底部的广告信息
//                text = text.replaceAll("<a.*?banner\"></ a><br/>", "");
//                text = text.replaceAll("powered.*?shrek.wang</ a>", "");
//                response.getWriter().write(text);
//            }
//
//            @Override
//            public void destroy() {
//            }
//        };
//        FilterRegistrationBean registrationBean = new FilterRegistrationBean();
//        registrationBean.setFilter(filter);
//        registrationBean.addUrlPatterns(commonJsPattern);
//        return registrationBean;
//    }
//}
